On Tue, May 15, 2018 at 08:36:35AM -0700, Dave Hansen wrote: > On 05/14/2018 11:52 AM, Fenghua Yu wrote: > > +#include <linux/printk.h> > > +#include <asm/msr.h> > > + > > +static bool split_lock_ac_supported; > > Was there a reason not to use an X86_FEATURE* bit for this?
The feature is not enumerated in cpuid. It's detected by writing 1 to bit 29 in MSR 0x33. So it can't fit in X86_FEATURE, right? Thanks. -Fenghua
